<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    .mask:hover {
      background-color:black;
      color: #252525;
    }
  </style>
</head>
<body>
<p>这是测试<span class="mask">并且被掩盖的</span>文字！</p>
</body>
</html>
